<template>
  <div class="columns">
    <div class="column is-full">
      <el-card class="box-card" shadow="never">
        <div slot="header" class="clearfix">
          <span><i class="fa fa fa-book"> 主题 / 发布主题</i></span>
        </div>
        <div>
          <!-- 在表单绑定了ruleForm数据 -->
          <el-form
            ref="ruleForm"
            :model="ruleForm"
            :rules="rules"
            class="demo-ruleForm"
          >
            <el-form-item prop="title">
              <el-input v-model="ruleForm.title" placeholder="输入主题名称" />
            </el-form-item>

            <!--Markdown-->
            <div id="vditor" />

            <b-taginput
              v-model="ruleForm.tags"
              class="my-3"
              maxlength="15"
              maxtags="3"
              ellipsis
              placeholder="请输入主题标签，限制为 15 个字符和 3 个标签"
            />

            <el-form-item>
              <el-button type="primary" @click="submitForm('ruleForm')"
                >立即创建
              </el-button>
              <el-button @click="resetForm('ruleForm')">重置</el-button>
            </el-form-item>
          </el-form>
        </div>
      </el-card>
    </div>
  </div>
</template>

<script>
import { post } from "@/api/post";
import Vditor from "vditor";
import "vditor/dist/index.css";

export default {
  name: "TopicPost",

  data() {
    return {
      contentEditor: {},
      ruleForm: {
        title: "", // 标题
        tags: [], // 标签
        content: "", // 内容
      },
      rules: {
        title: [
          { required: true, message: "请输入话题名称", trigger: "blur" },
          {
            min: 1,
            max: 25,
            message: "长度在 1 到 25 个字符",
            trigger: "blur",
          },
        ],
      },
    };
  },
  mounted() {
    this.contentEditor = new Vditor("vditor", {
      height: 500,
      placeholder: "此处为话题内容……",
      theme: "classic",
      counter: {
        enable: true,
        type: "markdown",
      },
      preview: {
        delay: 0,
        hljs: {
          style: "monokai",
          lineNumber: true,
        },
      },
      tab: "\t",
      typewriterMode: true,
      toolbarConfig: {
        pin: true,
      },
      cache: {
        enable: false,
      },
      mode: "sv",
    });
  },
  methods: {
    submitForm(formName) {
      this.$refs[formName].validate((valid) => {
        if (valid) {
          if (
            this.contentEditor.getValue().length === 1 ||
            this.contentEditor.getValue() == null ||
            this.contentEditor.getValue() === ""
          ) {
            alert("话题内容不可为空");
            return false;
          }
          if (this.ruleForm.tags == null || this.ruleForm.tags.length === 0) {
            alert("标签不可以为空");
            return false;
          }
          this.ruleForm.content = this.contentEditor.getValue();
          post(this.ruleForm).then((response) => {
            const { data } = response;
            setTimeout(() => {
              this.$router.push({
                name: "post-detail",
                params: { id: data.id },
              });
            }, 800);
          });
        } else {
          console.log("error submit!!");
          return false;
        }
      });
    },
    resetForm(formName) {
      this.$refs[formName].resetFields();
      this.contentEditor.setValue("");
      this.ruleForm.tags = "";
    },
  },
};
</script>

<style>
</style>